<template>
  <div class="star" :class="`star-${size}`">
    <span class="star-item" v-for="(item,index) of StarClass" :key="index" :class="item"></span>
  </div>
</template>

<script>
const ON = "on";
const HALF = "half";
const OFF = "off";
export default {
  props: ["score", "size"],
  data() {
    return {};
  },
  computed: {
    StarClass() {
      //3.6
      let starArr = [];
      let intNum = Math.floor(this.score); //3
      for (let i = 0; i < intNum; i++) {
        starArr.push(ON);
      }
      if (this.score * 10 - intNum * 10 > 5) {
        //36-30=6
        starArr.push(HALF);
      }
      while (starArr.length < 5) {
        //starArr.length=4
        starArr.push(OFF);
      }
      //   console.log(starArr);
      return starArr;
    }
  },
  components: {}
};
</script>

<style lang="stylus">
@import '../../common/css/mixins.styl'
.star // 2x图 3x图
  float left
  font-size 0
  .star-item
    display inline-block
    background-repeat no-repeat
  &.star-48
    .star-item
      width 20px
      height 20px
      margin-right 22px
      background-size 20px 20px
      &:last-child
        margin-right 0
      &.on
        bg-image('./images/stars/star48_on')
      &.half
        bg-image('./images/stars/star48_half')
      &.off
        bg-image('./images/stars/star48_off')
  &.star-36
    .star-item
      width 15px
      height 15px
      margin-right 6px
      background-size 15px 15px
      &:last-child
        margin-right 0
      &.on
        bg-image('./images/stars/star36_on')
      &.half
        bg-image('./images/stars/star36_half')
      &.off
        bg-image('./images/stars/star36_off')
  &.star-24
    .star-item
      width 10px
      height 10px
      margin-right 3px
      background-size 10px 10px
      &:last-child
        margin-right 0
      &.on
        bg-image('./images/stars/star24_on')
      &.half
        bg-image('./images/stars/star24_half')
      &.off
        bg-image('./images/stars/star24_off')
</style>
